(Happy) Hi! this is Greg and I need some help with my Math homework, I have already figure out some part but I need to know if I am on the right track. Thanks
17. A vendor reduces an item listed at $140 on July 1st by 20%, and then reduces it another 25% on September 1st. What is the sale price of the good after the last reduction?

20. A trader buys a good at a cost of $8.00 per unit. Operating expenses are 35% of the selling price and net profit is 15% of the selling price. What is the maximum dollar markdown allowed without incurring an operating loss on the sale of the good?